Palmprint Recognition Through a Reliable Ultrasound Acquisition System and a 3D Template
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Biometric systems based on ultrasonic images have the merits of being very resistent to spoof attacks. In this work, a 3D recognition procedure based on palmprint ultrasound images acquired through a reliable system, which uses a gel pad as coupling medium between the ultrasound probe and the hand, is proposed and experimentally evaluated. Several 2D palmprint images, at different under-skin depths, are extracted from the acquired volumetric image. For each of them a template is generated through an original procedure. The various templates are then opportunely combined to obtain a 3D template.
Keywords3-D palmprint Ultrasound imaging Biometrics Image processing
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